Cement



I06. COMPOSITIONS,

COATING OR PLASTIC.

UNITED STATES PATENT OFFICE.

ISAAC COOPER HATCH, OF SAXTA CRUZ, CALIFORNIA.

CEMENT.

SPECIFICATION forming part of Letters Patent No. 385,859, dated July 10, 1888.

(No specimens.)

To all whom 2'25 may concern.-

Be it known that I, ISAAC COOPER HATCH, of Santa Cruz, in the county of Santa Cruz and State of California, have invent-ed a new and Impro"ed Cement, of which the following is a full, elem, and exact description.

This invention relates to the manufacture of cement, the objectof the invent-ion being to provide a cement that shall be extremely tenacious, and one that will quickly and fully indurate.

My cement is made from the following ingredients, combined substantially in the proportions speoificd: lime (air-slakedJ fifteen pounds; fine sand, ien pounds; coralline, fifteen poundmr ten POllUt s, ese ingredients t-o ground and thoroughly mixed together.

ISAAC COOPER HATCH.

\Vitnesses E. SPAIsBunY, W. D. STOREY. 

